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Texas Instruments OPA4992IDR
- Part No.:
- OPA4992IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA4992IDR.pdf
- Description:
- 40-V, QUAD 10-MHZ, RAIL-TO-RAIL
- Quantity:
- Payment:
- Shipping:
Inventory:347
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Product details
Overview
OPA4992IDR from Texas Instruments is a quad-channel, 40V rail-to-rail input/output precision operational amplifier with ±210 µV offset voltage, 10.6 MHz gain-bandwidth, and 32 V/µs slew rate-designed for high-side/low-side current sensing and ADC driver applications in industrial motor drives and power delivery systems.
For engineers reviewing the OPA4992IDR datasheet, OPA4992IDR pinout, OPA4992IDR application, or OPA4992IDR equivalent, this page delivers verified specifications, package-validated pin functions, real-world use cases in multiplexed data acquisition and programmable logic controllers, and two confirmed alternative op amps with documented functional trade-offs.
Technical Context
The OPA4992IDR implements a dual-pair (PMOS/NMOS) input stage enabling rail-to-rail common-mode operation from V– to V+, supporting open-loop comparator use and MUX-friendly differential inputs up to supply rails. Its unity-gain stable architecture delivers 64° phase margin into 20 pF loads.
DC precision is maintained across –40°C to +125°C via ±0.25 µV/°C offset drift and 115 dB CMRR at 40 V supply, while low 7 nV/√Hz input voltage noise at 1 kHz supports high-resolution signal conditioning in noisy industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset voltage | ±0.21 mV typical - enables sub-0.1% error in 12-bit+ current-sense amplification at room temperature |
| Gain-bandwidth product | 10.6 MHz - supports stable closed-loop gain ≥10 up to ~1 MHz for fast-settling sensor interfaces |
| Slew rate | 32 V/µs - ensures <0.65 µs 0.1% settling for 10 V step, critical for pulse-width modulated feedback loops |
| Supply range | 2.7 V to 40 V (±1.35 V to ±20 V) - accommodates single-supply 3.3 V/5 V logic and high-voltage 24 V/36 V industrial rails |
| Input bias current | ±10 pA - minimizes voltage error across high-impedance source networks (e.g., thermocouples, photodiodes) |
| Common-mode rejection | 115 dB at 40 V - rejects >300 µV of supply ripple on VCM = V–, preserving accuracy in unregulated bus monitoring |
| Quiescent current | 2.4 mA per amplifier - balances performance and thermal load in space-constrained 14-pin SOIC packages |
Pinout & Package
OPA4992IDR is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6 mm, rated for operation from –40°C to +125°C, with exposed pad not present and no thermal pad requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8, 14 | Output (OUT1–OUT4) | Rail-to-rail output drivers capable of sourcing/sinking ±65 mA; each independently usable in single-ended or differential configurations |
| 2, 6, 9, 13 | Inverting input (IN1––IN4–) | Differential input pins accepting signals up to supply rails; compatible with multiplexer outputs without level-shifting |
| 3, 5, 10, 12 | Noninverting input (IN1+–IN4+) | High-impedance (6 TΩ || 1 pF) inputs enabling direct connection to high-Z sensors or reference dividers |
| 4 | Positive supply (V+) | Highest potential rail; must be decoupled locally with ≥100 nF ceramic capacitor to suppress 40 V supply transients |
| 11 | Negative supply (V–) | Lowest potential rail; serves as analog ground reference for all four channels and internal biasing |
Key Features
| Feature | Design Value |
|---|---|
| MUX-friendly inputs | Operates with differential inputs spanning full V– to V+ range, eliminating need for external clamping diodes in multiplexed front-ends |
| Comparator mode support | Stable open-loop operation with no phase reversal up to ±10 V input overdrive, enabling dual-use as precision comparator |
| Robust EMIRR performance | Immunity to RF interference up to 2.7 GHz per IEC 61000-4-3, reducing filtering requirements in EMI-heavy motor drive enclosures |
| High short-circuit current | ±65 mA output drive capability allows direct interface to 2 kΩ loads without external buffers in analog output modules |
| Low broadband noise | 4.4 nV/√Hz at 10 kHz enables clean amplification of fast transient signals (e.g., current spikes in inverter legs) |
Applications
| High-Side Current Sensing | ADC Driver and Reference Buffer |
|---|---|
Use Scenario: Monitoring phase currents in three-phase motor inverters using shunt resistors placed between power FETs and DC bus. IC Role / Device Role / Timing Role: Precision difference amplifier rejecting common-mode bus voltage up to 40 V while amplifying mV-level shunt drops. Use Value: ±210 µV offset ensures <0.5% gain error at 100 mV full-scale, meeting SIL-2 functional safety requirements for motor control. | Use Scenario: Driving SAR ADC inputs in programmable logic controller analog input modules with ±10 V range. IC Role / Device Role / Timing Role: Low-noise, fast-settling buffer isolating high-impedance DAC/reference from ADC sampling kickback. Use Value: 0.65 µs 0.1% settling time supports 1 MSPS sampling without aperture delay penalty. |
| Low-Side Current Sensing | Programmable Logic Controllers |
Use Scenario: Measuring load current in UPS battery management systems by sensing voltage across ground-referenced shunts. IC Role / Device Role / Timing Role: Rail-to-rail input op amp operating with VCM = V–, enabling accurate measurement near ground without level shifters. Use Value: ±10 pA input bias current prevents >1 µV error across 100 kΩ sensor divider networks. | Use Scenario: Signal conditioning for analog I/O cards handling 4–20 mA loop receivers and voltage outputs in industrial automation racks. IC Role / Device Role / Timing Role: Quad-channel precision amplifier providing simultaneous isolation, scaling, and filtering for multiple field signals. Use Value: 115 dB CMRR rejects shared ground noise across 16-channel backplanes, maintaining >14-bit ENOB. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4182IDR | Lower offset (±4 µV), lower noise (5.2 nV/√Hz), but narrower supply (±18 V max) and higher IQ (750 µA/channel) | Better DC accuracy for lab-grade instrumentation; unsuitable for 36 V+ industrial rails | Select when ultra-low offset dominates over high-voltage operation and power budget permits |
| LM324DR | Wider temp range (–40°C to +125°C), but higher offset (±3 mV), lower GBW (1.2 MHz), and no rail-to-rail input | Cost-sensitive general-purpose use where 12-bit accuracy suffices and supply ≤36 V | Select only for non-critical signal paths where cost outweighs precision and speed requirements |
Compared with OPA4182IDR, OPA4992IDR trades 4 µV offset for 40 V operation and 3× lower quiescent current; versus LM324DR, it delivers 14× better offset, 9× higher bandwidth, and true rail-to-rail input-making it essential for high-fidelity industrial sensing where voltage headroom and noise floor are constrained.
Availability
OPA4992IDR is available at Aetrix Electronics and suitable for high-side current sensing, ADC driver, programmable logic controller, and motor drive control applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA4992IDR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, specializing in analog and embedded processing technologies for industrial, automotive, and communications markets.
The OPAx992 family was designed specifically for high-voltage industrial signal conditioning-delivering precision, robustness, and rail-to-rail flexibility in harsh environments where reliability and long-term stability are mandatory.
FAQ
What is the maximum supply voltage rating for the OPA4992IDR?
The OPA4992IDR supports an absolute maximum supply voltage of 42 V (V+ to V–), with recommended operation from 2.7 V to 40 V. This 40 V upper limit enables direct interfacing with 24 V and 36 V industrial power rails without external regulation, while its ±1.35 V to ±20 V dual-supply range accommodates legacy ±15 V systems. Exceeding 42 V risks permanent damage per Absolute Maximum Ratings.
Does the OPA4992IDR support rail-to-rail input and output operation?
Yes, the OPA4992IDR provides true rail-to-rail input and output operation. Its dual-input-stage architecture (PMOS and NMOS pairs) allows common-mode input voltage range from V– to V+, and output swing within 7 mV of either rail under no-load conditions at 40 V supply. This eliminates level-shifting circuitry in high-side current sensing and single-supply data acquisition designs using the OPA4992IDR.
What is the typical input offset voltage drift of the OPA4992IDR over temperature?
The OPA4992IDR exhibits a typical input offset voltage drift of ±0.25 µV/°C across the full –40°C to +125°C operating range. This low drift, combined with ±210 µV initial offset, ensures total offset error remains below ±1.2 mV over temperature-critical for maintaining accuracy in uncalibrated industrial sensors and long-duration process monitoring systems using the OPA4992IDR.
Can the OPA4992IDR be used as a comparator in open-loop configuration?
Yes, the OPA4992IDR is explicitly designed for open-loop comparator use. Its MUX-friendly inputs accept differential signals up to the supply rails, and it shows no phase reversal under overdrive conditions-as verified in Figure 5-34 of the datasheet. However, propagation delay and output saturation behavior differ from dedicated comparators, so timing-critical applications should validate response with the actual OPA4992IDR layout and load.
What package options are available for the OPA4992IDR?
The OPA4992IDR is offered exclusively in the 14-pin SOIC (D) package (8.65 mm × 6 mm) and the 14-pin TSSOP (PW) package (5 mm × 6.4 mm). The "IDR" suffix specifically denotes the SOIC variant. Both packages are rated for –40°C to +125°C operation and feature standard lead finishes compatible with RoHS-compliant reflow processes. No QFN, WSON, or shutdown variants exist for the quad-channel OPA4992IDR.
OPA4992IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 32V/µs
- Gain Bandwidth Product:
- 10.6 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 10 pA
- Voltage - Input Offset:
- 210 µV
- Current - Supply:
- 2.4mA (x4 Channels)
- Current - Output / Channel:
- 65 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 40 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA4992IDR FAQ
1.How can I place an order for OPA4992IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4992IDR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA4992IDR reliable?
The price and inventory of OPA4992IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4992IDR is usually 5 days.
3.What payment methods are accepted for OPA4992IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4992IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4992IDR?
OPA4992IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4992IDR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA4992IDR?
For technical support, including OPA4992IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4992IDR requirements.
6.How does Aetrix verify that OPA4992IDR is sourced from the original manufacturer or authorized distributors?
All OPA4992IDR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA4992IDR meets industry standards.
7.What is the process for return or replacement of OPA4992IDR?
All OPA4992IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA4992IDR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA4992IDR part is unused and in its original packaging.
Return procedure for OPA4992IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA4992IDR Tags
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